Striking, lever or marine clock.



W. E. PORTER.

STRIKING LEVER 0R MARINE CLOCK.

APPLICATION FILED MAR. 12. ms.

1,139,369. Patented May 11, 1915.

THE NORRIS PETERS CO., PHOTu-LJTHQ, WASHINGTON. D. c

UNITED STATES PATENT OFFICE.

WILSON E. PORTER, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO NEW HAVEN CLOCK CO., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

STRIKING, LEVER ORMARINE CLOCK.

Specification of Letters Patent.

Patented May 11, 1915.

Application filed March 12, 1915. Serial No. 13,982.

To all whom it may concern Be it known that I, WILSON E. PORTER, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented'a new and useful Improvement in Striking, Lever or Marine Clocks; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, m

Figure 1 a view in front elevation of a striking, lever or marine clock movement constructed in accordance with my invention. Fig. 2 a view thereof in horizontal section on the line a-b of Fig. 1. Fig. 8 a detached view in front elevation of the front movement-plate. Fig. 4: a detached plan view of the separately organized centerarbor and dial-work. Fig. 5 a detached underside perspective view of the bridge employed for mounting the center-arbor and dial-work.

My invention relates to an improvement in striking, leveror marine clocks, the ob ject being to produce a simple and convenient mechanism constructed with particular reference to facility in harmonizing the striking mechanism with the position of the minute-hand.

With these ends in view, my invention consists in a striking, lever or marine clock having certain details of construction and combinations of parts as will be hereinafter described and pointed out in the claim.

In carrying out my invention as herein shown, I employ a bridge or assemblingplate 2 adapted in length to span a large concentric clearance-opening 3 in the front movement-plate 4: to which it is removably secured by screws 5 passing through holes 6 in its respective ends. The said bridge is accurately positioned by means of pins 7 mounted in it and registering with positioning-holes 8 in the plate 4:, and is provided midway of its length with a hole 9 forming a bearing for the forward end of a centerarbor 10 having at its rear end a pivot-bearing 11 entering a bearing-hole 12 in the rear movement-plate 13. Upon the center-arbor 10 I mount a cannon pinion 14 which meshes into a dial or minute-wheel 15 carrying a dial-pinion 16 and mounted upon a stud 17 in the bridge 2. The said dial-pinion 16 meshes into an hour or socket-Wheel 18 the socket 19 of which turns upon the projecting forward end of the arbor 10. A centerpinion 20 mounted upon the said arbor carries the center-wheel 21 and is frictionally mounted upon the arbor in any approved manner.

As shown, the friction device consists of a washer 22 and two bearing-washers 23, 28, separated by a split friction-washer 24 which is placed under tension by a collar 25 staked upon the arbor and interposed between the rear face of the assembling plate 2 and the front end of the said pinion 20. In this connection it should be stated that there is enough separation between the cannon pinion 14 and the collar 25 to provide the required so called end shake of the arbor 10 in the bridge 2. The center-arbor 10 is also furnished with a strike-releasing device consisting, as shown, of a disk 26 carrying two oppositely located lifting pins 27 which are relied upon to release the strike-mechanism which is not shown, but which may be of any approved form. In order to secure the accurate performance of the clock in the matter of striking, the pins 27 or their equivalents must be accurately adjusted with reference to the minute-hand 28 which is non-rotatably mounted upon the flattened forward end of the arbor 10. Since the hand 28 cannot be adjusted with reference to the said arbor, it is necessary to rotate the disk 26 upon the arbor for the purpose of positioning the pins 27 exactly with reference to the minute-h and 28. For this purpose the arbor must be removed from the clock. Under my invention it is only necessary to remove the screws 5 holding the bridge 2 in place, after which the said bridge and arbor and all of the parts connected with them, may be removed as a self-com tained or unitary organization, from the clock-movement without disturbing the same in any way. The disk 26 may then be turned and set upon the arbor 10 with reference to the minute-hand 28 and the said organiza tion returned to position in the clock-movement and the bridge secured to the plate 4 by the screws 5. In this process of removal and replacement, the large concentric clearance-hole 3 provides a passage-way for the center-wheel 21.

As shown, the movement is provided with two spring-barrels 29 of ordinary construction, mounted upon winding-arbors 80 furnished at their forward ends with ratchetwheels 31 engaged by spring pawls 32. However, the detailed construction of the clock may be widely varied, the essential feature of my invention being the mounting of the center-arbor and the parts immedi ately connected therewith upon a removable bridge so that the arbor and its associated parts constitute a self-contained organization which may be handled virtually as one piece in being applied to and removed from the movement, thus providing for the convenient and accurate adjustment of the disk 26 carrying the pins 27 with respect to the minute-hand 28.

I claim In a striking, lever or marine clock-movement, a bridge adapted to be removably attached to the front movement-plate, a center-arbor permanently connected with the said bridge, dial-work mounted upon the said bridge and arbor, a center-pinion frictionally mounted upon the arbor, a centerwheel carried by the said pinion, and a strike-releasing device adjustably mounted upon the arbor for being positioned with respect to the minute-hand applied to the forward end thereof, the said parts constituting a self-contained or unitary organization adapted to be handled as one piece in being applied to and removed from the clock-movement.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

WILSON E. PORTER. WVitnesses:

MALCOLM P. NICHOLS, C. L. WEED.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents,

Washington, I). G. 

